This is a visualization the US EPA EnviroScreen data for Chicago in 2019. The EnviroScreen metric combines environmental and demographic data into a single, easy to use metric for identifying environmental justice communities.
Census tracts are ranked for 11 environmental and 8 demographic indicators, a resulting percentile score is then found for each tract. The percentile scores are then averaged, resulting in an environmental and demographic score for each tract. The two averages are multiplied together to determine the EnviroScore.
A higher score means more pollution.
The Environmental Indicator is a combination of:
Caution: Technical Details: Census tracts are ranked for each environmental indicator, a resulting percentile score is found for each tract, and the percentile scores are then averaged. This results in the EnvironmentalIndicator score for each tract. If we then rank and derive the percentile scores of the Environmental Indicator, we get the EnvironmentalIndicatorPct.
A higher score means a more vulnerable population.
The demographic indicators are:
Again…
Caution: Technical Details: Census tracts are ranked for each demographic indicator, a resulting percentile score is found for each tract, and the percentile scores are then averaged. This results in the DemogrpahicIndicator score for each tract. If we then rank and derive the percentile scores of the Demographic Indicator, we get the DemographicIndicatorPct.